annullation
Annullation is the act of declaring something legally invalid and as if it never existed. The term is used in civil and ecclesiastical contexts to refer to nullity or voiding of legal instruments, decisions, or relationships. The spelling annullation is less common in contemporary English, where annulment (or, in some contexts, nullity) is more widely used. The word derives from Latin annullare, "to make void."
In marriage law, annullation (more commonly annulment) denotes a declaration that a marriage was invalid from
Process and effects: An annullation typically requires a formal petition or ruling by a competent authority.
In religious law, annullation has historical usage in ecclesiastical contexts; most modern English usage uses annulment.